v3.26.3
Cover - shares
 9 Months Ended
Sep. 30, 2026
Oct. 26, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2026  
Document Transition Report false  
Entity File Number 001-43329  
Registrant Name INNIO N.V.  
Entity Incorporation, State or Country Code P7  
Entity Address, Address Line One Nymphenburger Strasse 5  
Entity Address, Postal Zip Code 80335  
Entity Address, City or Town Munich  
Entity Address, Country DE  
Country Region +49  
City Area Code 89  
Local Phone Number 2500381-0  
Title of 12(b) Security Common shares, nominal value €0.04 per share  
Trading Symbol INIO  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   750,000,000
Central Index Key 0002109150  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Other Address    
Document Information [Line Items]    
Entity Address, Address Line One 1101 W. St. Paul Ave.  
Entity Address, Postal Zip Code 53188  
Entity Address, City or Town Waukesha  
Entity Address, State or Province WI  
Country Region +1  
City Area Code 262  
Local Phone Number 547.3311